Changes to how we handle fancy stacks:

pkg/unittest/lib/src/test_case.dart

Index: pkg/unittest/lib/src/test_case.dart
===================================================================
--- pkg/unittest/lib/src/test_case.dart	(revision 26163)
+++ pkg/unittest/lib/src/test_case.dart	(working copy)
@@ -41,9 +41,9 @@
    */
   String get result => _result;
 
-  Trace _stackTrace;
+  var _stackTrace;
   /** Stack trace associated with this test, or [null] if it succeeded. */
-  Trace get stackTrace => _stackTrace;
+  get stackTrace => _stackTrace;

[nweiz, 2013/08/14 23:56:59]

I don't like making this dynamically-typed. This will make any code that
accesses it type check correctly but fail at runtime in one or the other
configuration.

It would be better to leave this typed as Trace, and then have a separate
stackTraceString field that's always a string representation of a stack trace,
regardless of whether fancy traces are enabled.

[gram, 2013/08/15 22:36:43]

Done.

 
   /** The group (or groups) under which this test is running. */
   final String currentGroup;